Brand: PetSafe Size: S Color: Black & Silver *The outer box will be removed, and the main unit will be shipped only. About this product: This training harness is made by the American manufacturer PetSafe, utilizing a dog's natural behavior. It can naturally guide a dog to the side, making it easy to control pulling. By attaching the leash to the front of the chest, it becomes more difficult for the dog to go ahead of the owner. When the leash is pulled, the martingale loop tightens, weakening the dog's forward momentum. It doesn't constrict the throat even when the leash is pulled, so there's no worry about breathing difficulties or vomiting. Training can be done without putting a burden on the dog. It has buckles on the shoulders and belly, making it easy to put on. Once you adjust the size, you can put it on quickly. Sizes: 【S】Chest circumference approx. 21.5-28cm, Girth approx. 38-53cm / 【S/M】Chest circumference approx. 28-33cm, Girth approx. 48-66cm / 【M】Chest circumference approx. 30-38cm, Girth approx. 53-81cm / 【M/L】Chest circumference approx. 35.5-46cm, Girth approx. 62-86cm / 【L】Chest circumference approx. 40.5-53cm, Girth approx. 68.5-101.5cm / Chest circumference is measured from "the base of one front leg to the base of the other front leg", and girth is measured around "the thickest part of the chest, around the dog's armpits". 【Note】Leash is not included.